using System;

​

public class OtherCountClass : CountClass

{

    public static void Main()

    {

        OtherCountClass OtherCountClass = new OtherCountClass();

        OtherCountClass.doSomething();

    }

    public void doSomething()

    {

        base.Count("Hello World");

        sayHi("There");

    }

    public override void  sayHi(string msg){

        Console.WriteLine("*** method override ***");

        Console.WriteLine("Hi: " + msg);

    }

​

}

public class CountClass

{

    public void Count(string msg){

        Console.WriteLine(msg);

        for(int i = 0; i < 5; i++){

            Console.WriteLine("Count: " + i);

        }

    }

    public virtual void sayHi(string msg){

        Console.WriteLine("Hi: " + msg);

    }

}

​

​